<template>
    <div class="login_container">
       <div class="login_box">
           <!-- 头像区 -->
           <div class="avatar_box">
               <img src="../assets/logo.png" alt="">
           </div>
           <!-- 登录表单区 -->
           <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
               <!-- 用户名 -->
           <el-form-item prop="username">
             <el-input v-model="loginForm.username"  prefix-icon="el-icon-user-solid"></el-input>
           </el-form-item>
           <!-- 密码 -->
           <el-form-item prop="password">
             <el-input v-model="loginForm.password" type="password" show-password prefix-icon="el-icon-key"></el-input>
           </el-form-item>
            <!-- 按钮区域 -->
            <el-form-item class="btn">
             <el-button type="primary" @click="login">登录</el-button>
             <el-button type="info" @click="resetLoginForm">重置</el-button>
           </el-form-item>
           </el-form>

       </div>   
    </div>    
</template>

<script>
export default {

    data(){
        return{
            // 登录表单的数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            loginFormRules:{
                username:[
                      { required: true, message: '请输入登录名称', trigger: 'blur' },
                      { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                      { required: true, message: '请输入登录密码', trigger: 'blur' },
                      { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
      // 表单重置按钮
      resetLoginForm(){
          this.$refs.loginFormRef.resetFields();
      },
      // 表单预验证
      login(){
          this.$refs.loginFormRef.validate( async valid =>{
              if(!valid) return;
              const {data:res} = await this.$http.post('login',this.loginForm);
              if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
              this.$message.success(res.meta.msg);
              console.log(res);
              window.sessionStorage.setItem('token',res.data.token);
              this.$router.push('/home')
          });
      }
    }
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #eee;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
   .login_form{
       position: absolute;
       bottom: 20px;
       width: 100%;
       padding: 0 20px;
       box-sizing:border-box;
       
   }

   .btn{
       display: flex;
       justify-content: center;
   }
</style>

